Folder BLR

See Chuck Hensley's comprehensive index to articles in the BLR in the folder below.  It can be used to locate articles to research, whether found in the TCI LIbrary or elsewhere.

Chuck has offered to scan a limited number of pages from his collection (at his convenience).  Send requests using the "Contact Us" link in the Menu Bar above.

HINT:  Search for "BLR" followed by a topic keyword to find a series of related articles.  Use alphabetic sort to display them in chronological order.  e.g.  BLR PBX  or  BLR Picturephone.

When posted, complete scanned BLR issues from Sept. 1925 - Dec. 1961 were available here:
  https://worldradiohistory.com/Bell_Laboratories_Record_Issue_Key.htm

Categories

Documents

pdf 66Jan BLR P34 Designing Telephone Components Popular

By 387 downloads

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66Jan_BLR_P34_Designing_Telephone_Components.pdf

66Jan BLR P34 Designing Telephone Components

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66Jan BLR P9 Trimline A Telephone Evolution Popular

By 441 downloads

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66Jan_BLR_P9_Trimline_A_Telephone_Evolution.pdf

66Jan BLR P9 Trimline A Telephone Evolution

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66mar BLR - 1A2 Key Telephone System Popular

By 1833 downloads

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1A2 KTS - BLR 1966.pdf

66mar BLR -  1A2 Key Telephone System

Mar 1966, Bell Labs Review, Pages 85-88. "Key Telephone System: The Latest Chapter"

pdf 66Mar BLR P85 Key Telephone Systems 1A2 KSUs Popular

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66Mar_BLR_P85_Key_Telephone_Systems_1A2_KSUs.pdf

66Mar BLR P85 Key Telephone Systems 1A2 KSUs

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66May BLR P159 Expanding 101ESS Popular

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66May_BLR_P159_Expanding_101ESS.pdf

66May BLR P159 Expanding 101ESS

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 66Nov BLR P319 Trimline TouchTone Integrated Circuit Popular

By 369 downloads

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66Nov_BLR_P319_Trimline_TouchTone_Integrated_Circuit.pdf

66Nov BLR P319 Trimline TouchTone Integrated Circuit

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 67Apr BLR P122 Jacketed Station Wire Popular

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67Apr_BLR_P122_Jacketed_Station_Wire.pdf

67Apr BLR P122 Jacketed Station Wire

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 67Dec BLR P374 New Picturephone Model II Popular

By 405 downloads

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67Dec_BLR_P374_New_Picturephone_Model_II.pdf

67Dec BLR P374 New Picturephone Model II

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 67Feb BLR P49 800A PBX Popular

By 524 downloads

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67Feb_BLR_P49_800A_PBX.pdf

67Feb BLR P49 800A PBX

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 67Jun BLR P175 PICTUREPHONE Electron Tube Popular

By 404 downloads

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67Jun_BLR_p175_PICTUREPHONE_Electron_Tube.pdf

67Jun BLR P175 PICTUREPHONE Electron Tube

Bell Labs Record. Contributed by Chuck Hensley.

pdf 67Jun BLR P202 Experimental Lineless (Cordless) Telephone Popular

By 702 downloads

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67Jun_BLR_P202_Lineless_Telephone.pdf

67Jun BLR P202 Experimental Lineless (Cordless) Telephone

Bell Laboratories Record.  Covers the development and plans for field trials of the cordless phone. Contributed by Chuck Hensley.

pdf 67May BLR P161 OSP Drop Closure Popular

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67May_BLR_P161_OSP_Drop_Closure.pdf

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 68Apr BLR Cover AUTOVON Set Popular

By 757 downloads

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68Apr_BLR_Cover_AUTOVON_Set.pdf

68Apr BLR Cover AUTOVON Set

Bell Labs Record.  Article on page 106.  Contributed by Chuck Hensley.

pdf 68Apr BLR P106 AUTOVON Popular

By 2463 downloads

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68Apr_BLR_P106_AUTOVON.pdf

68Apr BLR P106 AUTOVON

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 68Apr BLR P130 Experimental Electronic Telephone Popular

By 396 downloads

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68Apr_BLR_P130_Experimental_Electronic_Telephone.pdf

68Apr BLR P130 Experimental Electronic Telephone

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 68Aug BLR P222 Polygrid For AUTOVON Popular

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68Aug_BLR_P222_Polygrid_for_AUTOVON.pdf

68Aug BLR P222 Polygrid For AUTOVON

Bell Labs Record. Contributed by Chuck Hensley.

pdf 68Aug BLR P238 Coin Level Detector Popular

By 385 downloads

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68Aug_BLR_P238_Coin_Level_Detector.pdf

68Aug BLR P238 Coin Level Detector

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 68Feb BLR P40 Bell System History 1 Popular

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68Feb_BLR_P40_Bell_System_History_1.pdf

68Feb BLR P40 Bell System History 1

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 68Jan BLR P9 60 Years Of PBX Development Popular

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68Jan_BLR_P9_60Years_of_PBX.pdf

68Jan BLR P9 60 Years Of PBX Development

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 68Jun BLR P206 PICTUREPHONE On Executive Desks Popular

By 412 downloads

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68Jun_BLR_P206_PICTUREPHONE_On_Executive_Desks.pdf

Bell Labs Record. Contributed by Chuck Hensley.

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